Blunt-lobed cliff fern is a North American native. They tolerate temperatures as low as –35°C.

Identification: Leaf stalks are scaly, with hairs.
Fronds are lacy, 24" (60 cm) × 3" (8 cm), bipinnate.
The sterile fronds are evergreen, while the fertile fronds are not. Fronds are light green to gray-green.
Sori, the structures that contain the fern’s spores, are located on leaf undersides. They form
a regular array of dots that are circular or kidney-shaped.